by Brian MansfieldAfter disbanding New Grass Revival, Bela Fleck began re-creating the role of the banjo in the same way Charlie Parker redefined the role of the saxophone. But Fleck may be the least-innovative member of this quartet: Howard Levy gets chromatics from his blues harp, Victor Wooten picks banjo rolls on his bass, and Roy Future Man Wooten plays a Frankenstein-monster drum-machine\u002Fguitar synthesizer. For all the flash, there's little pretense; the group's astonishing musicianship keeps an aw-shucks accessibility that lets everybody follow the melody while they marvel.